chore(charts): add prometheus rule support

Author: duanhongyi

charts/storage/templates/storage-service.yaml

@@ -6,6 +6,7 @@ metadata:
     prometheus.io/path: /minio/v2/metrics/cluster
     prometheus.io/port: "9000"
     prometheus.io/scrape: "true"
+    prometheus.io/direct: "true"
     {{- with .Values.service.annotations }}
     {{- toYaml . | nindent 4 }}
     {{- end }}